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Gaming Performance Comparison

Recommended System Requirements
Game Core i5-7640X 4.0GHz Xeon E5-2628L v3
Cyberpunk 2077 32% 22%
Assassins Creed: Valhalla 9% 5%
Call of Duty: Black Ops Cold War 34% 24%
FIFA 21 36% 27%
Microsoft Flight Simulator 23% 12%
Watch Dogs Legion 9% 5%
World of Warcraft: Shadowlands 6% 21%
Grand Theft Auto VI 12% 28%
Genshin Impact 49% 41%
Horizon: Zero Dawn 23% 12%

In terms of overall gaming performance, the Intel Core i5-7640X 4.0GHz is massively better than the Intel Xeon E5-2628L v3 when it comes to running the latest games. This also means it will be less likely to bottleneck more powerful GPUs, allowing them to achieve more of their gaming performance potential.

The Core i5-7640X 4.0GHz was released over a year more recently than the Xeon E5-2628L v3, and so the Core i5-7640X 4.0GHz is likely to have better levels of support, and will be more optimized for running the latest games.

Both CPUs exhibit very powerful performance, so it probably isn't worth upgrading from one to the other, as both are capable of running even the most demanding games at the highest settings (assuming they are accompanied by equivalently powerful GPUs).

The Xeon E5-2628L v3 has 6 more cores than the Core i5-7640X 4.0GHz. 10 cores is probably excessive if you mean to just run the latest games, as games are not yet able to harness this many cores. The cores in the Core i5-7640X 4.0GHz is more than enough for gaming purposes. However, if you intend on running a server with the Xeon E5-2628L v3, it would seem to be a decent choice.

The Xeon E5-2628L v3 has 16 more threads than the Core i5-7640X 4.0GHz. The Core i5-7640X 4.0GHz has one thread per physical core, whereas the Xeon E5-2628L v3 uses hyperthreading and has 2 logical threads per physical core.

Multiple threads are useful for improving the performance of multi-threaded applications. Additional cores and their accompanying thread will always be beneficial for multi-threaded applications. Hyperthreading will be beneficial for applications optimized for it, but it may slow others down. For games, the number of threads is largely irrelevant, as long as you have at least 2 cores (preferably 4), and hyperthreading can sometimes even hit performance.

More important for gaming than the number of cores and threads is the clock rate. Problematically, unless the two CPUs are from the same family, this can only serve as a general guide and nothing like an exact comparison, because the clock cycles per instruction (CPI) will vary so much.

The Core i5-7640X 4.0GHz and Xeon E5-2628L v3 are not from the same family of CPUs, so their clock speeds are by no means directly comparable. Bear in mind, then, that while the Core i5-7640X 4.0GHz has a 2 GHz faster frequency, this is not always an indicator that it will be superior in performance, despite frequency being crucial when trying to avoid GPU bottlenecking. In this case, however, the difference is probably a good indicator that the Xeon E5-2628L v3 is superior.

Aside from the clock rate, the next-most important CPU features for PC game performance are L2 and L3 cache size. Faster than RAM, the more cache available, the more data that can be stored for lightning-fast retrieval. L1 Cache is not usually an issue anymore for gaming, with most high-end CPUs eking out about the same L1 performance, and L2 is more important than L3 - but L3 is still important if you want to reach the highest levels of performance. Bear in mind that although it is better to have a larger cache, the larger it is, the higher the latency, so a balance has to be struck.

The maximum Thermal Design Power is the power in Watts that the CPU will consume in the worst case scenario. The lithography is the semiconductor manufacturing technology being used to create the CPU - the smaller this is, the more transistors that can be fit into the CPU, and the closer the connections. For both the lithography and the TDP, it is the lower the better, because a lower number means a lower amount of power is necessary to run the CPU, and consequently a lower amount of heat is produced.

The Xeon E5-2628L v3 has a 37 Watt lower Maximum TDP than the Core i5-7640X 4.0GHz. However, the Core i5-7640X 4.0GHz was created with a 8 nm smaller manufacturing technology. Overall, by taking both into account, the Xeon E5-2628L v3 is likely the CPU with the lower heat production and power requirements, by quite a wide margin.

CPU Core Details

CPU CodenameKaby Lake-XHaswell-EP
MoBo SocketNot sureLGA 2011/Socket R
Notebook CPUnono
Release Date30 Jun 201701 Sep 2014
CPU LinkGD LinkGD Link
Approved

CPU Technical Specifications

CPU Cores4vs10
CPU Threads4vs20
Clock Speed4 GHzvs2 GHz
Turbo Frequency4.2 GHzvs-
Max TDP112 Wvs75 W
Lithography14 nmvs22 nm
Bit Width64 Bitvs64 Bit
Virtualization Technologynovsno
Comparison

CPU Cache and Memory

L1 Cache Size-vs640 KB
L2 Cache Size-vs2560 KB
L3 Cache Size6 MBvs25 MB
Memory Channels-vs4
ECC Memory Supportnovsno
Comparison

CPU Graphics

Graphics
Base GPU Frequency-vs-
Max GPU Frequency-vs-
DirectX-vs-
Displays Supported-vs-
Comparison

CPU Package and Version Specifications

Package Size-vs-
Revision-vs-
PCIe Revision-vs-
PCIe Configurations-vs-

Gaming Performance Value

Performance Value

CPU Mini Review

Mini ReviewThe Intel Core i5-7640X 4-Core 4.0GHz is a high-end CPU based on the 14nm Kaby Lake-X micro architecture. It offers 4 physical cores (4 logical), initially clocked at 4.0GHz, which may go up to 4.2GHz with boost, and 8MB of L3 Cache. Among its many features, Turbo Boost 3.0 and Virtualization are activated and the processor has its multiplier unlocked. The Core i5-7640X is the only new seventh generation 'X' CPU without multithreading support, running with a quad-core / 4 Threads and an 8MB L3 Cache. It has a base clock of 4.0GHz and a boost of 4.2GHz. This CPU is likely to offer exceptional computational performance and will not be the bottleneck in any modern gaming PC. It will be able to play all modern games comfortably on high/ultra graphics performance without being a hindrance to the accompanying GPU.Xeon E5-2628L v3 is an upcoming server processor based on the 22nm, Haxwell microarchitecture.